Is a 370z my best current choice for a $30k track day car?

[RATEDM]

I sold my BMW Z4MCoupe 6 months ago and have been suffering from track-day withdrawals ever since.

So, now I'm looking for a new track-day toy.

After reading the recent car magazine reviews and the specs, the 370z looks as though it would be virtually equivalent (weight, power, size) to my old Z4MC but, much less expensive to buy and for aftermarket stuff like coilovers, brake parts, and other goodies (which is the appeal to me).

I was surprised to see all the problems with the oil cooling issue that some of you have experienced - hopefully a proper oil cooler fixes that (I'll be watching to see your results on this).

Anyway - for those of you that have experienced other cars and the 370z on track, how do you think I'd find a 370z after running a Z4MC in advanced groups with BMW & Porsche clubs?
Basically, my primary focus is track days - not daily driver - and I'd want something that felt close to, or better than, my last car in terms of power, handling and braking... Will a 370z fit the bill or should I go for one of my other current choices (used Z06, used Exige) and why?